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Advanced Energy Enhances Non-Contact Optical Fiber Thermometer for Improved Accuracy in Semiconductor Process Measurements

Posted July 09, 2024

Multi-channel fiber optic delivers industry-leading accuracy and temperature range enabling critical sensing for process efficiency and yield improvement 

DENVER, Colo., July 9, 2024 —
Advanced Energy Industries, Inc. (Nasdaq: AEIS) – a global leader in highly engineered, precision power conversion, measurement and control solutions – has announced the Sekidenko 4100T, a new version of its special materials pyrometer that provides the high-accuracy, non-contact temperature measurement demanded by next-generation semiconductor wafer applications.

Precise, non-contact temperature measurement simplifies process control in semiconductor manufacturing equipment and eliminates reliance on less accurate simulations and estimates. The upgraded 4100T non-contact optical fiber thermometer (OFT) supports enhanced in-situ process monitoring and control by combining flexible, multi-channel measurement options with a ground-up redesign improving performance at traditionally difficult to measure sub-250°C temperature ranges.

“Temperature measurements based on thermocouples and other contact-based technologies significantly increase the potential for wafer damage and contamination, while non-contact approaches such as simulation and estimating tools are inaccurate,” said Dhaval Dhayatkar, vice president, Critical Sensing and Control, Industrial Power Products at Advanced Energy. “Our Sekidenko 4100T OFT provides a solution that does not require wafer contact and ensures high-accuracy measurements, even at relatively low temperatures, giving manufacturers the data they need to optimize process efficiency, product quality and yield.”  

Supporting direct replacement for older systems, the upgraded 4100T provides simultaneous, high-speed (1kHz) measurement up to four channels. These channels can be configured independently, with wavelengths ranging from Ultraviolet to 2,300 nm, and temperature ranges spanning 60°C to 3,000°C. This flexibility allows for rapid measurements and optimization on a variety of target materials, process temperature ranges and working distances. Fiber based cables allow for immunity to radio frequency and electromagnetic interference. The improved signal-to-noise ratio of the 4100T improves stability in applications where thermal radiation may be limited.

The 4100T is compatible with lensed optical sensors and sapphire light pipe sensors. It also has an intuitive touch-screen interface, which eliminates the need for a remote computer and provides access to all information and commands from a single screen. An integrated EtherCat interface simplifies integration into a full measurement and process control system.

For detailed product information and technical specifications, visit: Sekidenko 4100T Series | Multi-Channel, Non-Contact Optical Fiber Temperature Pyrometer with Configurable Wavelength Range | Advanced Energy.


About Advanced Energy

Advanced Energy Industries, Inc. (Nasdaq: AEIS) is a global leader in the design and manufacture of highly engineered, precision power conversion, measurement and control solutions for mission-critical applications and processes. Advanced Energy’s power solutions enable customer innovation in complex applications for a wide range of industries including semiconductor equipment, industrial production, medical and life sciences, data center computing, networking and telecommunications. With engineering know-how and responsive service and support for customers around the globe, the company builds collaborative partnerships to meet technology advances, propels growth of its customers and innovates the future of power. Advanced Energy has devoted four decades to perfecting power. It is headquartered in Denver, Colorado, USA.

For more information, visit

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